Where does this fail? Interpreting a test bench as definitive proof of optimization is a classic failure mode, ignoring the real constraints of the market. Testing an algorithm on 250 assets does not prove its robustness against systemic volatilities or the liquidity requirements of a pension fund. It is the difference between a proof of concept and an operational proof required by FINMA for asset managers. The weakest link is the lack of consideration for transaction latency and the integration of compliance risks. A client project failed because the quantum predictive model, although theoretically effective, could not adapt to the Swiss regulatory authorities' daily real-time reporting requirements, making it unusable.